136 NATURAL HISTORY OF PLANTS. 
Detarium’ (figs. 129, 180) comes very near Copaifera in its flower : 
it has the same usually tetramerous perianth,? with scarcely im- 
bricated sepals ;? ten hypogynous stamens,’ of which the five larger 
are superposed to the sepals; and the same central gynzceum with 
its sessile biovulate ovary,’ surmounted by a style with a little 
stigmatiferous head, rolled in the bud towards the anterior side of the 
flower. But the fruit is a large sessile compressed orbicular drupe. 
Detarium senegalense. 
Fia. 130. 
Longitudinal section of flower. 
Fia. 129. 
Flower (4). 
Its one-seeded stone is rugose and bony, surrounded by sarcocarp 
whose flesh is traversed by a rich network of branching fibrovascular 
bundles. The two known species of this genus’ are unarmed trees 
from the west of tropical Africa, with alternate paripinnate pauci- 
foliolate leaves. The flowers form compound ramified racemes of 
spikes,’ either axillary or lateral on the wood of last year’s branches. 
The flowers of Hardwickia® scarcely differ from those of certain 
species of Copaifera. The receptacle is the same; the calyx consists 
of five sepals with thin edges imbricated in the bud. The stamens 
1J., Gen., 365.—DC., Prodr., ii. 521.—  stome is thickened so as to simulate a young 
Spacu, Suit. @ Buffon, i. 131—B. H., Gen., 
585, n. 861.—H. By., in Adansonia, vi. 200. 
2 The two posterior sepals are usually united 
into a single piece, but may be occasionally found 
separate. Hence the flower is resupinate, as in 
Copaifera. 
3 Only the edgeis bevelled, and this bevelled 
edge it is which alone overlaps or is overlapped 
in estivation. 
4 The filaments are at first bent on themselves 
near the insertion of the anther. 
5 The ovules are descending, anatropous, with 
the micropyles superior and exterior. The exo- 
caruncula at anthesis, The carpel is always 
superposed to the anterior sepa]. 
§ GMEL., Syst. iii, 700—Hoox., Wiger, 
327.—GuiLt. & Prrr., Fl. Seneg. Tent., i. 269, 
t. 59.—Watp., Rep., i, 854.—Ottv., Fi. Trop. 
Afr., ii. 312, 
7 The floral pedicel is either absent or very 
short, and articulated at the base 3 axillary to a 
bract and accompanied by two lateral bractlets. 
8 Roxs., Pl, Coromand., iii. 6, t. 209,— 
DC., Prodr., ii. 487.—Enp3., Glen., n. 6808.— 
B. H, Gen., 586, nu. 364.—H. Bny., in Adan- 
sonia, vi, 208. 
